Granted Patent
Utility
US 4,414,007 · App. 06/298,052
Process for separation of gas mixture
Inventor:
Bernard A. Bucchianeri
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Aug 31, 1981
Inventor
Bernard A. Bucchianeri
Assignee (at issue)
United States Steel Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.